2012
DOI: 10.1111/j.1751-0813.2012.00915.x
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An outbreak of severe iodine‐deficiency goitre in a sheep flock in north‐east Victoria

Abstract: Existing recommendations for south-eastern Australia are that only spring-lambing ewes in iodine-deficient areas require iodine supplementation to prevent goitre in years with high autumn-winter rainfall. Aspects of this outbreak suggest that ewes lambing at other times of the year and grazing abundant pasture for prolonged periods may also require supplementation to prevent goitre, even if autumn-winter rainfall does not exceed previously established thresholds.

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Cited by 12 publications
(20 citation statements)
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“…Os sinais clínicos e os achados macroscópicos encontrados nos casos apresentados são semelhantes aos observados em outras descrições de bócio por deficiência de iodo em bovinos (Wither 1997, Tokarnia et al 2000 bem como em caprinos (Martins 1946, Panziera et al 2014, ovinos (Campbell et al 2012) e seres humanos (Pezzuti et al 2009). Em bezerros, o aumento bilateral difuso da tireoide é considerado o principal indicador do hipotireoidismo congênito (Stukovsky et al 1961, Wither 1997.…”
Section: Bócio Em Bovinosunclassified
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“…Os sinais clínicos e os achados macroscópicos encontrados nos casos apresentados são semelhantes aos observados em outras descrições de bócio por deficiência de iodo em bovinos (Wither 1997, Tokarnia et al 2000 bem como em caprinos (Martins 1946, Panziera et al 2014, ovinos (Campbell et al 2012) e seres humanos (Pezzuti et al 2009). Em bezerros, o aumento bilateral difuso da tireoide é considerado o principal indicador do hipotireoidismo congênito (Stukovsky et al 1961, Wither 1997.…”
Section: Bócio Em Bovinosunclassified
“…A deficiência de iodo em vacas gestantes pode ocasionar bócio congênito, que se caracteriza pelo nascimento de bezerros com aumento de volume da glândula tireoide. Casos já foram descritos principalmente em bovinos, caprinos, ovinos e humanos (Wither 1997, Pezzuti et al 2009, Campbell et al 2012, Panziera et al 2014. Os animais com bócio congênito podem apresentar um crescimento deficiente, anorexia, mixedema, intolerância ao frio, pele espessa com áreas de alopecia, hiperpigmentação e pelos quebradiços (Radostits et al 2002, Tokarnia et al 2010.…”
Section: Introductionunclassified
“…Andere Autoren nennen Tagesmengen von 48 mg (8) oder 83 mg (9) als Grenzwert für das Auftreten der Erkrankung. Bei anderen Spezies -insbesondere dem Wiederkäuerist eine angeborene Struma auf eine Jodunterversorgung des graviden Muttertieres zurückzuführen (4,21).…”
Section: Diskussionunclassified
“…Iodine deficiency affects cellular energy, growth, and differentiation. Among ruminants the deficiency manifests primarily as diminished reproductive performance in dams and increased perinatal mortality of offspring (Sinclair and Andrews, 1958;Clark et al, 1998;Campbell et al, 2012). This can occur when grazing low-I pasture, and risk is increased when complementary crops such as brassica kale, swedes, Serum total iodine concentrations in pasture-fed pregnant ewes and newborn lambs challenged by iodine supplementation and goitrogenic kale 1,2 ABSTRACT: Iodine deficiency can impair the reproductive performance of livestock and affect perinatal mortality of offspring, yet diagnosis of deficiency is complicated and guidelines for I supplementation are imprecise.…”
Section: Introductionmentioning
confidence: 99%